Timing mechanism



Oct. 18, 1949. w. P. GALLAGHER El AL TIMING MECHANISM Filed April 1,1946 9 Sheets-Sheet 2 A44 OFF 64 car may H TC .wf/ w w H s w 3 F mm maan m I 6e): Y Carl Z feber,

AS81250)" M04,

44147204 OFF SWITCH 0N v 0a. 18, 1949. I I w. P. GALLAGHER HAL 2,485,195

TIMING MECHANISM Filed April 1, 1946 1 9 Sheets-Sheeb 4 Jnvehiors; I196a zza en' Ct /rd Zz/eer, PM 5". 52/150 7" w. P. GALLAGHER ET AL,485,195

Oct. 18, 1949.

TIMING MECHANISM 9 Sheets-Sheet 5 Filed April 1, 1946 Carl Zz/eber,

O 8, 1949. w. P'. GALLAGHER ET AL 2,485,195

TIMING MECHANISM Filed April 1, 1946 9 Sheets-Sheet 6 Wu a z 5 a w a 7 lw 7 7 i Wu J 9 6 9 w I w w r, 8 d y l 9 w J a wmr 6 w 7?, MESz/iwr. W l

William] G a/r6 Zube w. P. GALLAGHER ET AL 2,485,195

TIMING MECHANISM 9 Sheets-Sheet 9 Filed April 1, 1946 I Jnverzzors;William? Patented Oct. 18, 1949 UNITED STATES PATENT OFFICE TIMINGMECHANISM of Illinois Application April 1, 1946, Serial No. 658,680

15 Claims.

This invention relates generally to timing mechanisms and it hasparticular relation to presettable timing mechanisms for effecting theoperation of an alarm and a switch or either of them at a predeterminedtime.

It is usual to provide a clock in which the hour hand makes onerevolution in twelve hours and to provide an alarm mechanism and aswitch or both which can be set to operate at any time within the twelvehours. It is often desirable to have the alarm and/or switch to beoperated at some time in the second twelve hours rather than in thefirst twelve hours. That is, it may be desirable to arrange foroperation at, say, seven oclock in the evening, the settin being madewithin twelve hours after this time in the preceding evening.

Such operation is desired where an electrical appliance, such as acoffee maker or a radio set, is to be turned on and an alarm given at atime more than twelve hours after the setting is made. Also, it might bedesirable to turn on a light or lights at a predetermined time more thantwelve hours after the setting is made. Such operation may be requiredfor illuminating a sign a store window or like application.

Accordingly the object of this invention generally stated is to providea combination alarm and time switch which may be preset to operate atany time within a second twelve hour period after the expiration of afirst twelve hour period which shall be simple, efficient and accuratein operation and which may be readily and economically manufactured andused.

Another object is to provide for operating mechanism such as an alarmand switch mechanism or either of them at a predetermined time more thantwelve hours after a given time using timing mechanism which operatesthrough one cycle in twelve hours.

A further object is to provide for manually selecting the operation andeither the first or the second twelve hour interval.

A still further object is to shift an operating member from one positonto another in the first twelve hour interval and to shift it to a thirdposition in the next twelve hour interval to effect the desiredOperation at that time.

Another object is to provide for shutting off the alarm mechanismwithout changing the position of the switch.

Other objects of this invention will in part be obvious and in partappear hereinafter. I

This invention is disclosed in'the embodiment thereof shown in theaccompanying drawings and it comprises the features of construction,combination of elements and arrangement of parts which will beexemplified in the construction hereinafter set forth and the scope ofthe application of which will be indicated in the appended claims.

In general the invention comprises a timing motor, such as a synchronousmotor, which is arranged to drive a time wheel through one revolution intwelve hours. Conventional hour and minute hands are provided forcooperation with the time wheel andto indicate with respect to a dial ina conventional manner the time. A manually presettable, adjustable dialis arranged to carry a trip pin the positon of which controls thefunctioning of the tripping mechanism.

A spring biased multiple stop plate is arranged to be locked manually inan inoperative position and to be moved manually to various operativepositions as well as to be moved automatically to these operativepositions after it has been unlocked from its inoperative positon.Assuming that the mechanism is to operate at a time in the second twelvehour period, the adjustable dial is set to the desired time and the trippin carried thereby cooperates with the trip mechanism on the time wheelduring its next revolution for releasing the multiple stop lever to movefrom one position to another. However, at that time no further operationtakes place in so far as the alarm and switch mechanism is concerned.

When the time wheel completes a second revolution and the trippingmechanism carried thereby engages the trip pin, the multiple stop plateis released to move to a position where the alarm isreleased and theswitch is operated.

The multiple stop plate then can be moved manually so as to shut off thealarm while maintaining the switch in the operated position.

Additional manually operable means is provided for cutting out orshutting off the alarm mechanism. Such operation may be desirable whereonly the switch operation is required.

It will be understood that, while the present invention is described inconnection with a switch mechanism that is arranged to be operated fromthe open to the closed position at the presettable time, the arrangementmay be such that the switch is operated from a closed to an openposition. Moreover, while a synchronous electric motor is disclosed asproviding the driving means for the timing mechanism, it will beunderstood that other types of motor including a spring motor can beused.

For a more complete understanding of the nature and scope of thisinvention reference may be had to the following detailed descriptiontaken in connection with the accompanying drawings in which:

Figure 1 is a View, in front elevation, of a clock in which the presentinvention is incorporated;

Figure 2 is a view, in rear elevation, of the clock shown in Figure 1;

Figure 3 is a view, in side elevation, of the clock shown in Figure 1;

Figures 3a-3e show different positions of the control lever;

Figure 4 is a view, in rear elevation-of the clock mechanism with theback plate removed;

Figure 5 is a detail sectional view takenalong the line 5-5 of Figure 4;

Figure 6 is a view, in front elevation, of the mechanism mounted on theback plate, the case having been removed;

Figure '7 is a view, in front elevation, of the mechanism shown inFigure 6 with the adjustable dial removed and showing the trip mechanismmounted on the time wheel;

Figure 8 is a detail sectional view taken along the line 3-8 of Figure 7and illustrating the mechanism in the case;

Figure 9 is a detail sectional view taken along the line 98 of Figure i;

Figure 10 is a detail sectional view of one of the adjusting nobs;

Figure 11 is a view, in end elevation, at an enlarged scale of theadjusting nob;

Figure 12 is a view, in front elevation, of the switch mechanism,terminals and insulating mounting block;

Figure 13 is a detail sectional View taken along the line |3|3 of Figure12;

Figure 14 is a view, in front elevation, of the base plate and certainof the mechanism mounted thereon with the control lever in the position1;

shown in Figure 3d;

Figures 15 and 16 are detail sectional views taken along the line |5|5of Figure 14 showing how the control lever is released to permitmovement from one position to another;

Figure 17 is a view, in front elevation, of the base plate and certainof the mechanism mounted thereon with the control lever in the positionshown in Figure 30;

Figure 18 is a view similar to that shown in Figure 14 but with thecontrol lever in the position shown in Figure 3a;

Figure 19 is a View similar to that shown in Figure 17 but with thecontrol lever in the position shown in Figure 3b; and

Figure 20 is a view similar to that shown in Figure 14 but with thecontrol lever in the position shown in Figure 36.

Referring now particularly to Figures 1 through 4 of the drawings, itwill be noted that the reference character 2| designates a clock casewhich may be of metal or plastic. The case 2| carries a numbered faceplate or dial 22 with which a minute hand 23, mounted on a shaft24, andan hour hand 25 cooperate to indicate the time in a twelve hour period.Attention is called to the graduations indicated at 26 along the innerrim of the dial 22 which are divided into quarter hour intervals.

An adjustable dial 2! is arranged to be rotated manually, as will be setforth hereinafter, for presetting the mechanism to operate at thedesired time. The dial 21 carries an index 28 which can be set to thedesired time with respect to the scale 26 and the dial 22.

- hereinafter.

The face of the clock is provided with a cover glass 29 which may beheld in place by a retaining ring 30. As shown more clearly in Figure 9the retaining ring 30 may be provided with integrally formed tabs 3|which project into apertures 32 in the case 2| and are bent over insidethereof for holding the ring 3|| and therewith the cover glass 29 inplace.

At one side of the clock case 2| a control lever 33 projects. Thecontrol lever 33 has various positions as indicated in Figures 3a-3e towhich detailed-reference will be made hereinafter. Suitable conductors34 extend from the clock case 2| for energizing the synchronous electricmotor incorporated therein. It will be understood that the conductors'34may be connected to a suitable source of alternating current such as acycle-1'10 volt source.

In Figure 2 it will be noted that the clock is provided with a backplate 38, which may be formed of metal and that it has an inwardly andupwardly extending flange 39 that projects into a slot 40, Figure 9, forholding the upper side in place. The major portions of thesides and topof the back plate 39 are turned inwardly as indicated at 4| to stiffenit and to provide a closer fit with the inner wall of the case 2|.Screws 42, Figure 2, serve to hold the bottom of the back plate 38 inthe case'2| and permit ready removal thereof.

The back plate 38 has an inwardly deformed section 43 which is aperturedat 43 for receiving a socket portion 44 of an insulating housing whichcarries the switch that will be described Slots '45 are provided in theportion 44 of the housing that are spaced apart so as to receive aconventional plug attached to conductors that are connected to theelectrical device which is to be controlled. For example, the conductorsconnected to the plug may be connected to a radio set, electricalappliance, lamp or the like which is to be energized or de-energized atthe time the switch operates. It will be understood that the energy foroperating the device may be obtained through the conductors 34.

The inwardly deformed section 43 of the back plate 38 may be providedwith a generally semicircular opening 46 through which a raised section41 of the insulating housing may project.

The section 41 has an aperture 48 therein through which the conductors34 extend into the switch housing for connection to terminals therein,as will be described hereinafter.

An adjusting knob 5| is mounted on the rear end of the shaft 24 andserves to permit manual setting of the minute hand 23 and hour hand 25in conventional manner. As shown in Figures 10 and 11 the'knob 5| has abarrel 52 integrally formed therewith for slipping over the rear end ofthe shaft 24 with a relatively close fit. The shaft 24 is longitudinallyslotted as indicated at 53 to facilitate application of the barrel 52and to provide a certain degree of resiliency for holding the knob 5|thereon. One side of the slotted shaft 24, as indicated at 54, is longerthan the other side for projecting through a semi-circular aperture 55.This construction permits the knob 5| to rotate the shaft 24 on theapplication of torque thereto. At the same time it permits readyassembly of the knob 5| on the shaft 24. If desired, after assembly thesemi-circular end 54 of the shaft 24 may be peened over to prevent readyremoval of the knob 5|.

A control set knob similar to the nob 5|, is mounted in a like manner onthe rear end of a shaft 56 which, as will hereinafter appear, carries adial gear for adjusting the position of the dial 21.

The back plate 38 is apertured as indicated at 51 for receiving an alarmcut-out slide 58. The slide 58 is shown more clearly in Figure 5 Whereit is illustrated in the alarm release position.

A mounting screw 59 extends through the back plate 38 and is secured inplace by a nut 59'. As shown in Figure 5 the mounting screw 59 serves tohold a bell 68 in place on the inner side of the back plate 38. As isshown more clearly in Figure 8 the central rear part of the bell 68 isdeformed outwardly as indicated at SI for receiving the mounting screw59 and providing a limited area of engagement with the back plate 38.The engagement of the section 6| with the back plate 38 is the solesupport contact with the bell 68 thereby improving its tone.

As indicated in Figure 3 one side of the case 2I is provided with agenerally rectangularly shaped opening 62 through which the controllever 33 projects. An indicator plate 63 is carried by and is movablewith the control lever 33. As shown, the indicator plate 63 carriesnumbers such as 12 and 24 which register with a side aperture 64 toindicate the position occupied by the a control lever 33. When thefigures 12 are visible, the clock is set to operate the alarm and/orswitch at the preset time within the next 12 hours. When the figures 24appear in the open-- ing 64, the alarm and/or switch will be operated ata preset time in the second 12 hour period.

As shown in Figure 4, when the back plate 38 is removed, a base plate68, preferably formed of metal, is visible. The base plate 68 isprovided with a nose 69 which, as illustrated in Figure 9,

is arranged to fit in a slot 18 in the under side of the top of the case2|. Screws 1I serve to hold the base plate 68 in position in the case 2|and on removal thereof permit withdrawal of the base plate 68 and themechanism mounted there- It will be observed that the base plate 68 isslotted as indicated at 12 with the edges of the intermediate section 13turned upwardly for receiving conductors 14. This construction isprovided to insure that the conductors 14 do not touch the bell 68, therim of which extends over the section 13, thereby impairing its tone.

The conductors 14 serve to energize a synchronous electric motor 15which may be of conventional construction in so far as the presentinvention is concerned. The motor 15 is held in position on the baseplate 68 by screws 16.

The motor 15 is arranged to drive a gear Wheel 11 through a suitablereduction gear train (not shown) at a speed of one revolution per hour.The gear wheel 11 is carried by a shaft 18 which projects through thebase plate 68 and carries at its forward end a pinion which will bereferred to hereinafter. The gear wheel 11 drives a gear wheel 19 thatis fast on the shaft 24 which, it will be recalled, carries the minutehand 23.

On the lower left hand corner of the base plate 68 is mounted aninsulating switch mounting block or housing 88 from which theprojections 44 and 41, previously referred to, extend and with whichthey are integrally formed. The housing 88 is formed of suitableinsulating material such as Bakelite. It is held in place on the backplate 68 by a screw 8|.

Integrally formed with the housing 88 is an arm 82 which extendsupwardly and to the left to form a bearing for one end of a shaft 84.The control lever 33 is rockably mounted on the shaft 84, as willhereinafter appear.

Referring now to the Figures 12 and 13, the construction of theinsulating switch mounting block or housing 88 is shown in more detail.It will be noted that the housing 88 has a cavity 85 on the bottom ofwhich a switch blade bracket 86 is secured. A terminal 81 is likewisesecured to the bottom of the cavity 85. Terminal screws 88 and 89 serveto hold the bared ends of the conductors 34 in connection with thebracket 86 and terminal 81 respectively. A switch blade 98 of suitableresilient conducting material extends from the bracket 86 through a slot9| in the rim of the housing 88. The switch blade 98 carries a contactbutton 92 which engages a contact button 93 that is carried by a contactbracket 94. The contact bracket 94 extends through the slot 91 in thehousing 88 and is attached to a terminal 95. Contact spring fingers 96and 91, as shown in Figure 13, are connected to the terminals 95 and 81respectively and are held thereto and in the housing 88 by screws 98 and99. It will be noted that the inturned ends of the contact springfingers 96 and 91 register with the slots 45 and are arranged to beengaged by the prongs of the plug that is attached to the conductorsconnected to the mechanism thereby energized as previously described. Itwill now be apparent that the contact spring fingers 96 and 91 areenergized from the current source through the conductors 34 when theswitch blade 98 is in the position shown in Figure 12 with the contactbuttons 92 and 93 in engagement.

It will also be observed that the conductors 14 which serve to energizethe motor 15 are connected for energization to the conductors 34 by theterminal screws 88 and 89.

In order to interrupt the circuit to the contact spring fingers 96 and91, provision is made for separating the contact button 92 from thecontact button 93 by moving the switch blade 98 in a counterclockwisedirection, as viewed in Figure 12. For this purpose the outer end of theswitch blade 98 is apertured as indicated at I88 for receivingtherethrough a nose portion I8I Figure 4, of a switch operating arm I82that is rockably mounted on the shaft 84. The arm I82 is formedpreferably of suitable insulating material such as Bakelite. The mannerin which the arm I82 is operated to control the position of the switchblade 98 will be set forth in detail hereinafter.

As shown in Figure 13 an insulating cover I83 closes the cavity 85 inthe housing 88. It is formed of suitable insulating material such asfish paper.

As shown in Figure 6, the adjustable dial 21 comprises two plates I81and I88 which may be fastened together by rivets I89. The plate I81 isof smaller diameter than the plate I88, is provided with a suitableattractive finish and carries the index 28. The outer edge of the plateI88 is toothed as indicated for cooperation with the teeth of a shroudeddial gear H8 that is mounted for rotation with the shaft 56. It will nowbe apparent from a consideration of Figure 5 that rotation of the nob 55on the shaft 56 causes rotation of the shrouded dial gear II8 which inturn effects rotation of the dial 21. It is desirable that there be acertain amount of friction in the rotation of the shrouded dial gear II8so that it will remain in any position to which it may be rotated. Forthis purpose the assume:-

forward end of. the shaft 56: projects. through a hubv III that is:fastened to. the base plate 68 and: which is surrounded by a; coilcompression spring II2 that reacts between. the base plate 68 and a.cone-shaped washer I I31that bears against the backside of the: shroudeddial gear III]. It will be understood-I that the spring H2 actingthrough the washer II3 provides sufiicient frictional drag on the dialgear III) as to hold= it in any position at which it may be operated andthat it likewise holds the dial 2"! in corresponding position.

The adjustable dial 2'! carries a triangularly shaped trip pin I I4,Figured which extends rearwardl from the toothed disc 58. The trip pin II4 is, of course, movablewith the adjustabledial 21- and' serves, aswill hereinafter appear, to release the trip mechanism for causing thedesired operation of the alarm and switch mechanisms.

The adjustable dial 2? is relatively flexible. It is desirable that itbe held substantially in the plane shown in thedrawings for properoperation; The forward face of the disc I08 rotates immediately back ofthe inner edge of the dial 22, Figure 1, and thus is held from movingforwardly thereby. Tabs H and 5 I5, Figure 7, are cut out of the baseplate 58 and are bent forwardly thereto in such position as to provide aslight clearance space between the ends and the rear surface of the discI58. In addition anose It! is integrally formed with and projects from acontrol lever bracket I18 which forms a support for the other end of theshaft 85 and which may be secured to the base plate 68 by screws II9.Thus a three-point support is provided by the tabs H5 and Ill-3 and thenose II? for limiting the rearward movement of the dial 2'].

As shown more clearly in Figure 14 the shaft l8 which, it will berecalled, is driven at a speed of one revolution per hour, carries atits forward end a pinion E23 which meshes with an idler gear wheel i2 3that in turn drives a pinion I25. The pinion I25, Figure 7, meshes withand drives a time wheel 26 in a clockwise direction as indieated by thearrow i2l. The gear reduction. is such that the time wheel I26 makes onerevolution in twelve hours.

As shown in Figure 8 the time wheel. E25 is mounted for rotation with ahub I28 that is rotatably mounted on a tubular bearing sleeve I29 fromwhich a circular flange I30 projects. The flange i3!) is. secured asbyrivets IZI' to the back plate 58.

Rotatably mounted on another step on the hub I28 is a ratchet wheel. 34,Figures 7-8,. which carries an arm 555, Figure 5, from which a trip pin53? extends through an aperture I38, Fig ure 14, in the base plate 58.The trip pin I3], as shown, has a square cross section and its outer endis reduced for receiving one. end of a coil tension spring I55, Figure5, the other end of which is anchored to a tab Mi struck rearwardly fromthe base plate 58, Figure 4. The spring MI! serves to bias the stop pinI137 against a stop M2, Figure 14, that is formed with base plate 6.8.and projects into the aperture I58.

Mounted on the rear side of the time wheel I25, Figure 8, is a pawl I43which is arranged to cooperate with the teeth of the ratchet wheel I134.The pawl E43 is carried by a pin I44 which projects through the timewheel I25 and carries at its other end a pawl actuating arm I45. It willbe understood that the pawl I43 is movable with the arm I45 through thepin I44 which is.

8 rockable mounted; on the time wheel. I126. The arm I: is biased in. aclockwise direction. by a coik tension spring I46 which extends betweena hook portion I4 1" of the. arm I45and. a. tab I48 that is struck outof the time wheel. I26. The spring MB serves to rock the pawl I43. intoengagement with the teeth of the ratchet wheel I34. This engagementtakes place once during.

each; revolution of the time wheel I126, as will hereinafter appear.Otherwise the pawl In is held out. of; engagement with the teeth of theratchet wheel; I 34 by. an actuating member I49 one. end Iz5l't of whichengages. a nose portion I5I of the arm I45. The actuating member I49. isrockablymounted. on a pin I52 which extends from the time wheel. I25.The actuating member I49. is. biased in a clockwise direction about thepin I52; by a coil tension spring r53 which is connected between. a.hook. portion I54 of the member I49; and. a tab I55- which is struck upfrom the time wheel I25. It will be understood that the spring 553 holdsthe actuating member I49 in the position. shown in Figure '7 with theend portion I-5ll in engagement with the nose I5I of. the arm I45,thereby holding the pawl I43 out: of engagement with the ratchet wheelI34. against the biasing force of the spring I46.

In order to move the actuating member I49 a dog I561 is pivoted thereonby a pin. I51. The dog I56 has a nose portion I58 which is arranged to:be engaged by the trip. pin H 4 either when the time wheel moves. thedog I56 to the proper position. or the dial 211 is manually rotated. topreset the same.

It is desirable that. no movement of the actuating member I49 take placewhen the trip pin H4 is moved past the dog I56 in a clockwise direction.Forthis purpose the dog I55 is provided with inclined edge I59 leadingto the nose I58 and; the dog Ii56 is slotted as indicated at ISO topermit a slight movement relative to the pin I52. It will be understoodthat when the trip pin H4 is moved in a clockwise direction relative tothe dog I55, it will merely slide along the inclined edge- I 59 and thedog I56 rocks in a clockwise direction as permitted by the slot I60until it passes the tip ofthe nose I58.

As shown in Figure 7- the dog I56 may be biased by a coil compressionspring I62 which reacts between thedog I56 and a tab I63struck up fromthe actuating member I49.

When the nose I58- is moved into engagement with the trip pin I I4,either as by rotation of the time wheel I26 in the clockwise directionor a. movement ofthe trip pin H4 in a counterclockwise direction, thetrip pin IIlI engages a radial face I'GI. of' the dog. I56. Continuedrelative movement of the trip pin H4 and the dog I56 causes theactuating member I49 to be rocked in a counterclockwise directionthereby withdrawing the end. I'5IT of the member I49 from engagementwith the nose I5I' of the arm I45 and permitting the spring I46; to movethe pawl I43 into engagement with the teeth of the ratchet wheel As therelative. movement of the trip pin H4 and the dog, I56-v continues theactuating member I49. rocks andspring. I153 is tensioned. The actuatingmember. I49 is thus. moved about the pin E52 until. the, nose I58. ismoved past the trip pin I I4. The actuating member I49 is then releasedfor movement with. a snap action. under the force of spring. I53 so thatthe end I 50 of. the actuating member I49 strikes the nose I5I of thearm I45 a blow or impacts the same- A corresponding movement is impartedthrough the pawl I43 to the ratchet wheel I34 and the stop pin I31,Figure 14, carried thereby is moved away from the stop I42. Thismovement of the stop pin I31, as will hereinafter appear, serves torelease control mechanism which in turn effects operation of the alarmand switch mechanism.

Referring now to Figure 14 it will be observed that a multiple stopplate I61 is there shown. The stop plate I61 is fast on shaft 84 and isarranged to be biased in a clockwise direction by a coil spring I68 oneend I69 of which bears against the lower portion of thecontrol leverbracket I I8 while the other end I18 bears against a tab I1I that isstruck up from the plate I61. The plate I61 has an arcuate opening I12along the inner edge of which flattened stop portions I13 and I14 arelocated for successively engaging the stop pin I151. The outer surfaceof the arouate slot I 12 has a flat surface I15 intermediate the stopsH3 and I14. The purpose of the flat surface I15 is to limit the outwardmovement of the stop pin I31 when it leaves the stop I13 and to directit into engagement with the stop I14 when the stop plate IE1 is moved ina clockwise direction by the spring I68. The lower end of the arcuateslot I12 is closed by a tail portion I16 which serves to strengthen theplate I61 and hold the portions thereof forming the slot I12 inalignment. A stop, in the form of a tab I11 struck up from the baseplate 68, serves to limit the movement of the stop plate I61 in aclockwise direction.

With a view to moving the stop pin I 31 out of engagement with either ofthe stops I13 or I14 with which it may be engaged for the-purpose ofmanually adjusting the position of the stop plate I61 a flat edge I18 ofa pin release arm I19 is arranged to engage the stop pin I31 in eitherof these two positions. is rockably mounted on the stop plate I61 by apin 188. A spring I8! serves to hold the pin release arm I19 in theretracted position. It will be observed that the spring I 8| is fastenedbetween a tab I82 struck up from an inner extension of the control lever33 and a hook I83 extending from a shoulder portion I 84 integrallyformed with the pin release arm I19.

The pin release arm I19 is moved by the control lever 83 through theagency of a nose I85 integrally formed with the latter and bearingagainst the shoulder I84. The control lever 33 has limited movementrelative to the stop plate I61 as permitted by a notch I86 at the innerend in which the tab I1I extending from the stop plate I61 projects.Thus when the control lever 33 occupies the position shown in eitherFigure 17 or Figure 19, movement of the control lever 33 in a clockwisedirection causes the pin release arm I19 to be moved so as to lift thestop pin I31 out of engagement with the stops I14 and I13 respectivelythereby permitting the spring I68 to move the stop plate I61 to the nextposition.

As shown in Figures 14, 15 and 16 the control lever 33 has a rearwardlyturned shoulder I98 which, in the position shown in Figure 14, isarranged to abut an extension I9I of the base plate 68 thereby holdingthe control lever in the position shown in Figure 3d. When it is desiredto move the control lever to the position shown in Figure 3c, thecontrol lever 33 is shifted toward the front, as shown in Figure 16,against the spring I68 until the shoulder I98 clears the extension I9I.The spring I68 then moves the The pin release arm I19 stop plate I61until it rests against the stop I11, Figure 14.

Mounted for rotation with the shaft 84 and the stop plate I61 is a camI92, Figures 5-17, having a nose I93 that is arranged to engage a pin#94 which extends through the switch operating arm I 82, Figure 4, formoving the same so as to separate the contact buttons 92 and 93, therebyopening the switch. The switch operating arm I82 is slotted as indicatedat I95, Figure 17, so as to permit relative movement with respect to theshaft 84.

As shown more clearly in Figure 4, a stop I96 is integrally formed withthe base plate 68 for cooperating with the shoulder I98 of the controllever 33 for holding the same in. the position shown in Figures 3b and19. When it is desired to move the control lever 33 to the positionshown in Figures 3a and 18, the control lever 33 is moved, as indicatedin Figure 16, to such position that the shoulder I98 clears the stopi963 whereupon the control lever 33 is moved against the biasing forceof the spring I68 until the shoulder I98 engages the stop I96, as shownin Figure 18. In this position neither the alarm nor the switchmechanism is operable.

The mechanism for ringing the bell 68 will now be described. As shown inFigure 14 a bell hammer I89 is arranged to strike the inside of the bell68, Figure 5. The hammer I99 is located on the rear side of the baseplate 68 and is carried by an arm 288 which projects from the front sideof the base plate 68 through an aperture 28! therein. The aperture 28!is generally rectangular to permit the hammer I99 and arm 288 to rockfor striking the bell 68. At its upper end the arm 288 is rockablymounted by a screw 282 on a tab 283 which is struck up from the baseplate 68. For reciprocating the arm 288 shoulders 284 and 285 areprovided on a connecting rod 286 which is arranged to be oscillated withthe arm 288 between the shoulders 204 and 285. The connecting rod 266has an inverted V-shaped notch 281 which interfits with an off-centerpin 288 carried by a pinion 289 which forms a part of the gear trainthat is driven by the motor 15. It will be understood that the rotarymovement of the pinion 289 is translated by the pin 288 intoreciprocatory movement of the connecting rod 286. In turn this movementof the connecting rod 286 causes the arm 298 to oscillate and the hammerI99 to strike the bell 68. The parts are so proportioned that when thehammer I99 strikes the bell 68, it is moving freely, i. e., the arm 288is out of engagement with the shoulder 285,

The connecting rod 286 is guided in its reciprocatory movement by a lug-2I8 which proiects into a slot 2H in the base plate 68.

In order to provide for moving the connecting rod 286 to the inoperativeposition, as shown in Figures 17, 18, 19 and 20, it is provided with aforwardly turned shoulder 2I2 with which a nose 2I3 of an alarm releaselever ZI4 is arranged to engage, as shown in these figures. The alarmrelease lever 2M is rockably mounted by a screw 2I5 on the base plate 68and has a nose portion 2I6 which is arranged to be engaged by the outercircular edge 2I1 of the stop plate 161. The edge M1 is recessed asindicated at 2| 8 to permit the nose ZIG to move therein and therebypermit the alarm release lever M4 to rock in a clockwise direction tothe position shown in Figure 14.

The alarm release lever 2I4 is biased in a clockwise direction by a coilcompression spring 222 which bears against a depending arm 223 andagainst one tine 224-, Figure 5, of the cut-out slide 55. Another tine225 of the cut-out slide 53 is arranged to move back of the depending mm223 for holding the alarm release lever M4 in the position thereof,shown in Figures 174849-20 of the drawings.

It will thus be seen that the position of the alarm release lever 2I4may be controlled not only by the control lever 33 but also by thecutout slide 58. Thus, if it is desired that the alarm not be sounded atthe time that the switch mechanism is operated, the cut-out slide 58 maybe left in the innermost position where it looks the alarm release leverH4 in the position shown in Figure 18, for example. Thus, even thoughthe stop plate I61 occupies the position shown in Figure 14, the nose2I6 is prevented from movin into the recess 2I8.

In describing the operation of the clock mechanism disclosed hereinattention is called to the fact that the control lever 33 may bemanually set to any of the positions thereof shown in Figures 3a-3e. Ifit is desired that the clock mechanism be used only for the purpose ofindicating time, then the control lever 33 s positioned as shown inFigure 3a and in Figure 18. Here it will be observed that the shoulderI90 is locked behind the stop I95, the switch blade 90 is in the openposition with the contact buttons 92 and 93 separated and the alarmrelease lever 2I4 holds the connecting rod 206 in the inoperativeposition. Thus even though the cut-out slide 58 may be withdrawn to theposition shown in Figure 5, the alarm mechanism is held inoperative.

But when it is desired to preset the mechanism to operate at any time inthe second twelve. hours, the control lever 33 is moved to compress thespring I58, as indicated in Figure 16, and the spring I88 moves the stopplate I61 until the stop I13 engages the stop pin I31, as shown inFigure 19. The corresponding position of the control lever 33 is shownin Figure 3b. Either 1 before or after shifting the control lever 33 tothe position shown in Figure 3b the control set nob is turned to set theadjustable dial 21 so that the index 23 is located at the time in thesecond 12 hours that it is desired to have the alarm and switchmechanism functioning. It will be understood that the adjustable dial 21may have been set previously to this desired time. In such case all thatis necessary is to release the control lever 33 for movement to theposition shown in Figure 31).

When the'adjustable dial 21 is moved to the preset position, the trippin H4, Figure '1, carried thereby is set in a corresponding position toengage the radial edge IIiI of the dog I56 when the time wheel I26 isrotated by the motor 15 to the corresponding position. The continuedrotation of the time wheel I25 causes the actuating member M9 to rockabove its pivot pin I52. As previously described the first result ofthis movement is to permit the spring I45 to move the pawl actuating armI45 so as to bring the pawl I43 into engagement with the ratchet wheelI34. The dog I55 is released from the trip pin H4 at the time in thefirst 12 hours which is 12 hours ahead of the preset time. The actuatingmember I48 then moves with a snap action under the force applied by thespring I53 to impact the arm I45. This causes the ratchet wheel I34 tobe rocked slightly and to carry with it the stop pin I31 out ofengagement with the stop I13. The spring I68 immediately moves the stopplate I61 in a clockwise direction and the flat edge I15 of the arcuateslot I12 directs the stop pin l3! into engagement with the stop I14, asshown in Figure 17. In this position it will be noted that the contactbuttons 92 and 93 of the switch mechanism are still separated and thatthe alarm release lever 2I4 is still held in the inoperative position.It will be noted further that the control lever 33 has been moved to theposition shown in Figure 3c.

The time wheel I26 continues to rotate through the next twelve hourswhereupon the nose I58 of the dog I56 again engages the trip pin H4 andthe stop pin I31 is again moved as previously described by movement ofthe ratchet wheel I34. In both instances the stop pin I31 moves awayfrom the stop I42. The movement of the ratchet wheel I34 causes the stoppin I31 to move out of engagement with the stop I14 and thereupon thespring I58 swings the stop plate I61 to the position shown in Figure 14.Here its movement in clockwise direction is limited by the shoulder I50engaging the extension I9I. In this position. the nose I93 of the camI92 moves out of engagement with the pin I 3-4 and the switch operatingarm IE2 is moved relative to the shaft 83 by the inherent resiliency ofthe switch blade 3!) until the circuit is completed through the contactbuttons 92 and 93. The circuit is then completed. for energizing thedevice such as the electrical appliance, radio and the like.

In this position. of the multiple stop plate I61 the nose H6 of thealarm release lever H4 is located in the recess 2 I8, assuming that thecutout slide I58 has been withdrawn, the spring 222 urging the alarmrelease lever 2I'4 to this position. The connecting rod 205 then movesso that the pin: 208 is engagedv and the connecting rod is oscillatedthereby. The hammer I99 then repeatedly strikes the bell 5D to give thealarm and notify the operator that the switch has been closed.

The alarm continuesto ring until the control lever 33 either is moved tothe position shown in Figure 3e and in Figure 20 where the switchremains closed while the alarm is shut off or the control lever 33 ismoved to any of the positions shown in Figures 3a3b3c where both theswitch. and the alarm are cut off.

When the controllever 33 is moved to the position shown in Figure 31),it will be understood that the numerals 24 on the indicator plate 33will appear in the aperture 64. Thus by inspeoting the indicator plate63 it is possible to quickly determine the operative condition of theclock. After the stop pin I31 has been moved away from the stop I13,either by actuation of the ratchet wheel I34 or by manual operation as aresult of movement of the pin release arm I19, the stop plate IE1 ismoved by the spring I68 until the stop pin I31 engages the stop I14. Inthis position the numerals 12 on the indicator plate 63 are visible inthe aperture 64, as shown in Figure 3. If desired, suitable indicia maybe provided on the indicator plate 83 which will be visible for thepositions of the control lever 33 as indicated in Figures 3a3d3e.

If it is desired that the alarm and/or switch be operated at any timeduring the next twelve hours, the control lever 33 is initially set tothe position shown in Figures 30-17. The dog 56 in its first engagementthereafter with the trip pin II4 will effect movement of the stop plateI61 to the position shown in Figure 14 where, if the cut-out slide 58 iswithdrawn, both the alarm and the switch will be operated. The controllever 33, as before, may then be moved to the position shown in Figures3e-20 where the alarm will be cut out while the switch will remainclosed.

It will now be apparent that the present invention provides foroperating an alarm signal and a switch at any time in either a first orsecond 12 hour period. The alarm indicates that the switch has beenactuated. On the further movement of the control lever 33 the alarm maybe cut out while the switch remains closed. A1- ternatively the alarmcut-out slide 58 may be moved inwardly so as to prevent operation of thealarm until the same is withdrawn.

Ordinarily after the electrical apparatus has been operated for thedesired period of time, it may be de-energized by moving the controllever 33 to any of the positions shown in Figures 301 3b-3c. If thecontrol lever 33 is moved back to the position shown in Figure 3a then,of course, no operation can take place. However, if the control lever 33is reset to the position shown in Figure 3b, the alarm will be operated,assuming that the cut-out slide 58 is withdrawn, and the switch will beclosed at the preset time during the second succeeding twelve hours. Forexample, it may be desired to have a radio set turned on at seven oclockeach evening. The index 28 is adjusted by the control set nob 55 to aposition opposite the numeral 1 on the dial 22. The control lever 33 ismoved to the position shown in Figure 3b and the cut-out slide 58 iswithdrawn. After the alarm has been operated and the switch closed andthe radio set has been energized for the desired interval, the controllever 33 can be reset to the position shown in Figure 3b. Thereupon thecycle of operations previously described will be repeated.

Since certain further changes can be made in the foregoing constructionand different embodiments of the invention can be made without departingfrom the spirit and scope thereof, it is intended that all matter shownon the accompanying drawings and described hereinbefore shall beinterpreted as illustrative and not in a limiting sense.

What is claimed as new is:

1. A timing mechanism comprising, in combination, a time wheel arrangedto be rotated once every twelve hours, tripping means thereon, mechanismto be operated at a predetermined time more than twelve hours after agiven time, means arranged to be operated by said tripping means from afirst position to a second position during one revolution of said timewheel without operating said mechanism and from said second position toa third position during the next revolution of said time wheel to effectoperation of said mechanism, a member for operating said tripping means,and means for manually preset ting said member.

2. A timing mechanism comprising, in combination, a time wheel arrangedto be rotated once every twelve hours, tripping means thereon, mechanismto be operated at a predetermined time more than twelve hours after agiven time, means arranged to be operated by said tripping means from afirst position to a second position during one revolution of said timewheel without operating said mechanism and from said second position toa third position during the next revolution of said time wheel to effectoperation of said mechanism, manually operable means for presetting saidmeans in said first position, a member for operating said trippingmeans, and means for manually presetting said member.

3. A timing mechanism comprising, in combination, a time wheel arrangedto be rotated once every twelve hours, tripping means thereon, an alarmmechanism and a switch mechanism to be operated at a predetermined timemore than twelve hours after a given time, means arranged to be operatedby said tripping means from a first position to a second position duringone revolution of said time wheel without operating either of saidmechanisms and from said second position to a third position during thenext revolution thereof to effect operation of both of said mechanisms,manually operable means for moving said means to a fourth position torestore said alarm mechanism to the inoperative condition while leavingsaid switch mechanism in the operated condition, a member for operatingsaid tripping means, and means for manually presetting said member.

4. A timing mechanism comprising, in combination, a time wheel arrangedto be rotated once every twelve hours, tripping means thereon, an alarmmechanism and a switch mechanism to be operated at a predetermined timemore than twelve hours after a given time, means arranged to be operatedby said tripping means from a first position to a second position duringone revolution of said time wheel without operating either of saidmechanisms and from said second position to a third position during thenext revolution thereof to eifect operation of both of said mechanisms,manually operable means for presetting said means in said first positionand moving said means to a fourth position to restore said alarmmechanism to the inoperative condition while leaving said switchmechanism in the operated condition, a member for operating saidtripping means, and means for manually presetting said member.

5. A timing mechanism comprising, in combination, a time wheel arrangedto be rotated once every twelve hours, tripping means thereon, and alarmmechanism to be operated at a predetermined time more than twelve hoursafter a given time, means arranged to be operated by said tripping meansfrom a first position to a second position during one revolution of saidtime wheel without operating said alarm mechanism and from said secondposition to a third position during the next revolution thereof toefiect operation of said alarm mechanism, manually operable means meansfor moving said means to a fourth position to restore said alarmmechanism to the inoperative condition, a member for operating saidtripping means, and means for manually presetting said member.

6. A timing mechanism comprising, in combination, a time wheel arrangedto be rotated once every twelve hours, tripping means thereon, a switchmechanism to be operated at a predetermined time more than twelve hoursafter a given time, means arranged to be operated by said tripping meansfrom a first position to a second position during one revolution of saidtime Wheel without operating said alarm mechanism and from said secondposition to a third position during the next revolution thereof toeffect operation of said switch mechanism, manually operable means formoving said means to a fourth position to restore said alarm mechanismto the inoperative condition while leaving said switch mechanism in theoperated condition, a member for operating said tripping means, andmeans for manually presetting said member.

'7. A timing mechanism comprising, in combination, a timing motor, aswitch, a multiple stop lever for operating said switch, said leverbeing arranged to be located in at least four different positions,spring means for moving said lever from a first position to the otherpositions, looking means for holding said lever in its first position,manual means for releasing said locking means to permit said lever tomove to its second position, cyclically operable means driven by saidmotor, and trip means operated by said cyclically operable means duringone cycle of its operation for releasing said lever to move to its thirdposition and during the next cycle for releasing said lever to move toits fourth position whereupon said switch is operated from one positionto another.

8. A timing mechanism comprising, in combination, a timing motor, aswitch, an alarm signal, a multiple stop lever for operating said switchand signal, said lever being arranged to be located in five differentpositions, spring means for moving said lever from a first position tothe other positions, locking means for holding said lever in its firstposition, manual means for releasing said locking means to permit saidlever to move to its second position, cyclically operable means drivenby said motor, manually presettable trip means operated by saidcyclically operable means during one cycle of its operation forreleasing said lever to move to its third position and during the next'cycle for releasing said lever to move to its fourth position whereuponsaid switch is operated from one position to another and said alarmsignal is operated, and stop means for arresting said lever in saidfourth position, said manual means being operable to permit said leverto move past said stop means to its fifth position in which said alarmsignal ceases to operate while said switch is unaffected.

9. A timing mechanism comprising, in combination, a timing motor, analarm signal, a multiple stop lever for operating said signal, saidlever being arranged to be located in five different positions, springmeans for moving said lever from a first position to the otherpositions, looking means for holding said lever in its first position,manual means for releasing said locking means to permit said lever tomove to its second position, cyclically operable means driven by saidmotor, manually presettable trip means operated by said cyclicallyoperable means during one cycle of its operation for releasing saidlever to move to its third position and during the next cycle forreleasing said lever to move to its fourth position whereupon said alarmsignal is operated, and stop means for arresting said lever in saidfourth position, said manual means being operable to permit said leverto move past said stop means to its fifth position in which said alarmsignal ceases to operate.

10. A timing mechanism comprising, in combination, a base plate, asynchronous motor thereon, a time wheel rotatably mounted on said baseplate and driven by said motor; a tripping mechanism comprising a pawlrockably mounted on one side of said time wheel, an actuating armconnected to and movable with said pawl and disposed on the other sideof said time wheel, a spring biasing said actuating arm, an actuatingmember pivotally mounted on said time wheel, a spring for biasing saidactuating member to im- '16 pact said actuating arm and holding the sameagainst the biasing force of its spring, a dog pivoted on said actuatingmember and having lim ited movement relative thereto, and a springbiasing said dog outwardly with respect to said actuating member; aratchet wheel coaxially mounted with said time wheel and rockableindependently thereof and arranged to be engaged by said pawl when saidactuating arm is disengaged by said actuating member and the former isfree to be moved by its spring, a stop pin extending from said ratchetwheel through an aperture in said base plate, a stop finger in saidaperture integral with said base plate, a spring interconnecting saidstop pin and said base plate for biasing the former against said stepfinger, a dial rotatable coaxially with and independently of said timewheel. manual means for rotating said dial to any desired position, atrip pin carried by said dial and disposed on rotation thereof in onedirection to pass by said dog without moving said actuating member andon relative rotation in the opposite direction with respect to said timewheel to rock said actuating member and tension its spring and thenrelease the same to strike said actuating arm whereupon said ratchetwheel is rocked by said pawl to move said stop pin away from said stopfinger, a shaft rockably mounted normal to said base plate, a multiplestop lever carried by said shaft, a spring biasing said multiple stoplever, a plurality of steps on said multiple stop lever arranged to beengaged successively by said stop pin whereby said lever is held inpositions corresponding to said steps, said steps being located alongthe inside of an arcuate slot in said lever the outer side of whichserves to direct the movement of said stop pin on disengaging one stepin response to actuation of said ratchet wheel into engagement with thenext step, a manually operable control lever rockably mounted on saidshaft and having limited movement relative to said multiple stop leverfor moving the same to its various operative positions, an arm rockablymounted on said multiple stop lever and operable by said control leverduring said limited movement thereof for moving said stop pin off ofsaid steps to permit said multiple stop lever to be moved by its springto the next position thereof, a spring for holding said arm on said stoplever in retracted position, a cam rotatable with said shaft, a switchoperated by said cam to the closed position only after said stop pin hasbeen moved out of engagement with the last of said steps and saidmultiple stop lever has been moved to the next position by its spring,an alarm bell hammer pivoted on said base plate for striking an alarmbell, means including a connecting rod operatively interconnecting saidmotor and said bell hammer for reciprocating the latter to ring thebell, an alarm release lever rockably mounted on said base plate andarranged in operative position to cooperate with said connecting rod fordisestablishing said operative connection between said motor and saidbell hammer, a nose portion on said alarm release lever arranged to beengaged by the outer curved surface of said multiple stop lever forholding said alarm release lever in its operative position, said outercurved surface having a re-entrant portion for receiving said noseportion only when said multiple stop lever has been moved to its saidnext position to permit said release lever to move to inoperativeposition, and manually operable means for locking said alarm releaselever in operative position.

11. A timing mechanism comprising, in combination, a base plate, asynchronous motor thereon, a time wheel rotatably mounted on said baseplate and driven by said motor; a tripping mechanism comprising a pawlrockably mounted on one side of said time wheel, an actuating armconnected to and movable with said pawl and disposed on the other sideof said time wheel, a spring biasing said actuating arm, an actuatingmember pivotally mounted on said time wheel, a spring for biasing saidactuating member to impact said actuating arm and holding the sameagainst the biasing force of its spring, a dog pivoted on said actuatingmember and having limited movement relative thereto, and a springbiasing said dog outwardly with respect to said actuating member; aratchet wheel coaxially mounted with said time wheel and rockableindependently thereof and arranged to be engaged by said pawl when saidactuating arm is disengaged by said actuating member and the former isfree to be moved by its spring, a stop pin extending from said ratchetwheel through an aperture in said base plate, a stop finger in saidaperture integral with said base plate, a spring 1 interconnecting saidstop pin and said base plate for biasing the former against said stopfinger, a dial rotatable coaxially with and independently of said timewheel, manual means for rotating said dial to any desired position, atrip pin carmounted normal to said base plate, a multiple i stop levercarried by said shaft, a spring biasing said multiple stop lever, aplurality of steps on said multiple stop lever arranged to be engagedsuccessively by said stop pin whereby said lever is held in positionscorresponding to said steps, said steps being located along the insideof an arcuate slot in said lever the outer side of which serves todirect the movement of said stop pin on disengaging one step in responseto actuation of said ratchet wheel into engagement with the next step, amanually operable control lever rockably mounted on said shaft andhaving limited movement relative to said multiple stop lever for movingthe same to its various operative positions, an arm rockably mounted onsaid multiple stop lever and operable by said control lever during saidlimited movement thereof for moving said stop pin off of said steps topermit said multiple stop lever to be moved by its spring to the nextposition thereof, a spring for holding said arm on said stop lever inretracted position, and mechanism operatively connected to said multiplestop lever and arranged to be operated thereby when it occupies certainof its operative positions.

12. A timing mechanism comprising, in combination, a base plate, asynchronous motor thereon, a time wheel rotatably mounted on said baseplate and driven by said motor; a tripping mechanism comprising a pawlrockably mounted on one side of said time wheel, an actuating armconnected to and movable with said pawl and disposed on the other sideof said time wheel, a spring biasing said actuating arm, an actuatingmember pivotally mounted on said time wheel, a

18 spring for biasing said actuating member to impact said actuating armand holding the same against the biasing force of its spring, a dogpivoted on said actuating member and having limited movement relativethereto, and a spring biasing said dog outwardly with respect to saidactuating member; a ratchet wheel coaxially mounted with said time wheeland rockable independently thereof and arranged to be engaged by saidpawl when said actuating arm is disengaged by said actuating member andthe former is free to be moved by its spring, a stop pin extending fromsaid ratchet wheel through an aperture in said base plate, a stop fingerin said aperture integral with said base plate, a spring interconnectingsaid stop pin and said base plate for biasing the former against saidstop finger, a dial rotatable coaxially with and independently of saidtime wheel, manual means for rotating said dial to any desired position,a trip pin carried by said dial and disposed on rotation thereof in onedirection to pass by said dog without moving said actuating member andon relative rotation in the opposite direction with respect to said timewheel to rock said actuating member and tension its spring and thenrelease the same to strike said actuating arm whereupon said ratchetwheel is rocked by said pawl to move said stop pin away from said stopfinger, a shaft rockably mounted normal to said base plate, a multiplestop lever carried by said shaft, a spring biasing said multiple stoplever, a plurality of steps on said multiple stop lever arranged to beengaged successively by said stop pin whereby said lever is held inpositions corresponding to said steps, said steps being located alongthe inside of an arcuate slot in said lever the outer side of whichserves to direct the movement of said stop pin on disengaging one stepin response to actuation of said ratchet wheel into engagement with thenext step, a manually operable control lever rockably mounted on saidshaft and having limited movement relative to said multiple stop leverfor moving the same to its various operative positions, an arm rockablymounted on said multiple stop lever and operable by said control leverduring said limited movement thereof for moving said stop pin off ofsaid steps to permit said multiple stop lever to be moved by its springto the next position thereof, a spring for holding said arm on said stoplever in retracted position, a cam rotatable with said shaft, and aswitch operated by said cam to the closed position only after said stoppin has been moved out of engagement with the last of said steps andsaid multiple stop lever has been moved to the next position by itsspring.

13. A timing mechanism comprising, in combination, a base plate, asynchronous motor thereon, a time wheel rotatably mounted on said baseplate and driven by said motor; a tripping mechanism comprising a pawlrockably mounted on one side of said time wheel, an actuating armconnected to and movable With said pawl and disposed on the other sideof said time wheel, a spring biasing said actuating arm, an actuatingmember pivotally mounted on said time wheel and carryingan operatingdog, and a spring for biasing said actuating member to impact saidactuating arm and holding the same against the biasing force of itsspring; a ratchet wheel coaxially mounted with said time wheel androckable independently thereof and arranged t be engaged by said pawlwhen said actuating arm is disengaged by said, actuating member and the19 former is free to be moved by its spring, a stop pin extending fromsaid ratchet wheel, stop means on said base plate for said stop pin,spring means biasing said stop pin against said stop means, a dialmanually rotatable coaxially with and independently of said time Wheel,a trip pin carriedby said dial for engaging said dog to rock saidactuating member and tension its spring and then release the same tostrike said actuating arm whereupon said ratchet wheel is rocked by saidpawl to move said stop pinaway from said stop means, a multiple stoplever carried b said base plate, a spring biasing said multiple stoplever, a plurality of steps on said multiple stop lever arranged to beengaged successively by said stop pin whereby said lever is held inpositions corresponding to said steps, said steps being located alongthe inside of an arcuate slot in said lever the outer side of whichserves to direct the movement of said stop pin on disengaging one stepin response to actuation of said ratchet wheel into engagement with thenext step, a mari ually operable control lever disposed in cooperativerelation to said multiple stop lever for moving the same to its variousoperative positions, a switch arranged to be operated by said multiplestop lever from one position to another only after said stop pin hasbeen moved out of engagement with the last of said steps and saidmultiple stop lever has been moved to the next position by its spring,an alarm signal, and means cooperating with said multiple stop leverwhen the same is in the switch operating position for efiecting theoperation of said alarm signal, said control lever being operable tomove said multiple stop lever beyond its said next position to rendersaid alarm signal inoperative without changin the position of saidswitch.

14. A timing mechanism comprising, in combination, a base plate, asynchronous motor thereon, a time wheel rotatably mounted on said baseplate and driven by said motor; a tripping mechanism comprising a pawlrockably mounted on one side of said time wheel, an actuating armconnected to and movable with said pawl and disposed on the other sideof said time wheel, a spring biasing. said actuating arm, an actuatingmember pivotally mounted on said time wheel and carrying an operatingdog, and a spring for biasing said actuating member to impact saidactuating arm and holding the same against the biasing force of itsspring; a ratchet wheel coaxially mounted with said time wheel androckable independently thereof and arranged to be engaged by said pawlwhen said actuating arm is disengaged by said actuating member and theformer is free to be moved by its spring, a stop pin extending from saidratchet wheel, stop means on said base plate for said stop pin, springmeans biasing said stop pin against said stop means, a dial manuallrotatable coaXially with and independently of said time Wheel, a trippin carried by said dial for engaging said dog to rock said actuatingmember and tension its spring and then release the same to strike saidactuating arm whereupon said ratchet wheel is rocked by said pawl tomove said stop pin away from said stop means, a multiple stop levercarried by said base plate, a spring biasing said multiple stop lever, aplurality of steps on said multiple stop lever arranged to be engagedsuccessively by said stop pin whereby said lever is held in positionscorresponding to said steps, said steps being located along the insideof an arcuate slot in said lever the outer side of which serves todirect the mdvenient of said top pin on disengaging one step in responseto actuation of said ratchet wheel into engagement with the next step, amanua ly operable control lever disposed in cooperative relation to saidmultiple stop lever for moving the same to its various operativepositions, and mechanism operatively connected to said multiple stoplever and arranged to be operated thereby when it occupies certain ofits operative positions.

15. A timing mechanism comprising, in combination, a base plate, asynchronous motor thereon, a time wheel rotatably mounted on said baseplate and driven by said motor; a tripping mechanism comprising a pawlrockably mounted on one side of said time wheel, an actuating armconnected to and movable with said pawl and disposed on the other sideof said time wheel, a spring biasing said actuating arm, an actuatingmember pivotally mounted on said time wheel and carrying an operatingdog, and a. spring for biasing said actuating member to impact saidactuating arm and holding the same against the biasing force of itsspring; a ratchet wheel coaxially mounted with said time wheel androckable independently thereof and arranged to beengaged by said pawlwhen said actuating arm is disengaged by said actuating member and theformer is free to be moved by its spring, a stop pin extending from saidratchet wheel, stop means on said base plate for said stop pin, springmeans biasing said stop pin against said stop means, a dial manuallyrotatable coaxially with and independently of said time wheel, a trippin carried by said dial for engaging said dog to rock said actuatingmember and tension its spring and then release the same to strike saidactuating arm whereupon said ratchet wheel is rocked by said pawl tomove said stop pin away from said stop means, a multiple stop levercarried by said base plate, a. spring. biasing said multiple stop lever,a plurality of steps on said multiple stop lever arranged to be engagedsuccessively by said stop pin whereby said lever is held in positionscorresponding to said steps, said steps being located along the insideof an arcuate slot in said lever the outer side of which serves todirect the movement of said stop pin on disengaging one step in responseto actuation of said ratchet wheel into engagement with the next step, amanually operable control lever disposed in cooperative relation to saidmultiple stop lever for moving the same to its various operativepositions, and a switch arranged to be operated by said multiple stoplever from one position to another only after said stop pin has beenmoved out of engagement with the last of said steps and said multiplestop lever has been moved to the next position by its spring.

WILLIAM P. GALLAGHER.

CARL WEBER.

PAUL E. SUTOR.

REFERENCES CITED The following references are of record in the file ofthis patent:

UNITED STATES PATENTS Number Name Date 396,632 Waters Jan. 22, 18891,561,005 Levenstein Nov. 10, 1925 1,763,230 Frisch June 10, 19301,865,965 Ruiz July 5, 1932 2,081,289 Ayres May 25, 1937 2,200,110Anderson May '7, 1940 2,232,519 Got! Feb. 18, 1941

